diff --git a/docs/plugins/substitute.rst b/docs/plugins/substitute.rst
index a899abf14..14f3cb025 100644
--- a/docs/plugins/substitute.rst
+++ b/docs/plugins/substitute.rst
@@ -1,5 +1,5 @@
 Substitute Plugin
-==============
+=================
 
 The ``substitute`` plugin lets you easily substitute values in your templates and
 path formats. Specifically, it is intended to let you *canonicalize* names